Case-mix adjustment using administrative databases: a paradigm to guide future research.

@article{Wray1997CasemixAU,
  title={Case-mix adjustment using administrative databases: a paradigm to guide future research.},
  author={Nelda P. Wray and Jill Hollingsworth and Nancy J Peterson and Carol M. Ashton},
  journal={Medical care research and review : MCRR},
  year={1997},
  volume={54 3},
  pages={326-56}
}